Karolina Pliskova, furious over a blown call at a critical juncture in an Italian Open loss, smashed a hole in the umpire’s chair with her racket. (Reuters)

This is a proper tennis meltdown.

World No. 5 Karolina Pliskova of the Czech Republic lost a close second-round match to Greece’s Maria Sakkari on Wednesday at the Italian Open after incompetent officiating cost her a point late in the third set.

The controversy starts at the 5:35 mark of the video here.

Pliskova calls on higher authority after terrible call

With the game tied at 40-40 in a 5-5 third set, Pliskova scored what looked like an obvious point on an overhead smash that landed just inside the court. The broadcast’s score bug had already marked the point, scoring the game advantage Pliskova, before the line judge ruled the ball out to the dismay of the crowd.

Chair umpire Marta Mrozinskaasked for clarification from the line judge and explained to a pleading Pliskova that the line judge’s ruling would stand since there was no mark on the clay to prove otherwise.

Pliskova asked for a WTA supervisor, who provided no help despite replay clearly showing that the ball was in.

I love when you all have your thoughts! Listen she will look back and probably regret she did that but understand your busting your ass for 3 hours and u feel like you’ve just been robbed by someone who has ALL THE POWER. Use Hawkeye!!! It’s ridiculous!!!